Water spray gun



FIG. 1 is a front elevation view thereof;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view of a water spray gun showing my new design.

The ornamental design for a water spray gun, as shown and described.